High-response glue injection type coupler

Abstract

The utility model discloses a high-response glue injection type coupler which comprises a driving shaft half coupler and a driven shaft half coupler matched with the driving shaft half coupler, and the two half couplings are oppositely arranged, are provided with assembling holes matched with a driving shaft and a driven shaft and are used for achieving the effect that the driving shaft drives the driven shaft. A plurality of protrusions are arranged on the opposite sides of the half couplings, grooves are formed between the protrusions, the half couplings are bonded through an adhesive, the adhesive is a polyurethane adhesive, and excellent bonding strength, chemical stability and fatigue resistance can be provided. In addition, the driving shaft half coupling and the driven shaft half coupling are made of aluminum alloy or titanium alloy materials, light weight and high strength are ensured, and high assembly precision and high coupling overall performance are ensured through precision machining. According to the utility model, the small offset of the shaft can be compensated to a certain extent, the requirement on the installation concentricity of the shaft is reduced, and the device is suitable for the application scene with frequent start and stop or large dynamic load change.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, and more specifically, to a high-response glue-injected coupling. Background Art

[0002] A coupling is a mechanical component that connects the driving shaft and the driven shaft to rotate together and transmit motion and torque, mainly realizing functions such as transmitting torque, compensating for shaft offset, absorbing vibration and shock.

[0003] Existing couplings are mainly divided into two categories. One is a rigid coupling, which usually directly connects two shafts by a mechanical structure. Although it has high torque transmission accuracy, it lacks the ability to compensate for shaft offset and has extremely high requirements for the concentricity of the shafts during installation. The other is a flexible coupling, which mainly compensates for shaft offset and absorbs vibration through elastic elements. However, these elastic elements may wear or fatigue after long-term use.

[0004] Therefore, how to provide a coupling that can achieve a high torque transmission effect, has low installation accuracy requirements, has the ability to compensate for shaft offset, and has good fatigue resistance is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] In view of this, the utility model provides a high-response glue-injected coupling. To achieve the above object, the utility model provides the following technical solutions, including: a driving shaft half-coupling and a driven shaft half-coupling that cooperates with the driving shaft half-coupling. The two half-couplings are arranged opposite to each other, and both are provided with assembly holes that cooperate with the driving shaft and the driven shaft, playing the role of the driving shaft driving the driven shaft. A plurality of protrusions are provided on the opposite sides of the two half-couplings, and grooves are formed between the protrusions. The length of the grooves is greater than the length of the protrusions, ensuring that the protrusions can be inserted into the grooves. The protrusions and the grooves are bonded with an adhesive.

[0006] Preferably, in the above high-response glue-injected coupling, a chamfer is provided at the top of the protrusion.

[0007] Preferably, in the above high-response glue-injected coupling, flow guide grooves are provided at the bottom of the groove and the side wall of the protrusion to guide the flow of the adhesive.

[0008] Preferably, in the above high-response glue-injected coupling, grid textures are provided at the top of the protrusion and the bottom of the groove to increase the contact area.

[0009] Preferably, in the above high-response glue-injected coupling, the adhesive is a polyurethane adhesive.

[0010] Preferably, in the above-mentioned high-response injection-molding coupling, the materials of the driving shaft half-coupling and the driven shaft half-coupling are both aluminum alloy or titanium alloy.

[0011] Preferably, in the above-mentioned high-response injection-molding coupling, the main bodies of the driving shaft half-coupling and the driven shaft half-coupling are both provided with positioning pin holes, into which positioning pins can be inserted to assist in aligning and fixing the driving shaft and the driven shaft.

[0012] It can be seen from the above technical solutions that, compared with the prior art, the present utility model discloses a high-response injection-molding coupling. By modifying the connection structure between the two half-couplings, the present utility model enables the two half-couplings to use a high-performance adhesive to improve the response speed. Due to the uniformity of the intermediate injection layer and the precision machining of the connecting components, the coupling will not generate large radial or axial deviations when transmitting torque, thus ensuring the accuracy of the equipment. The fatigue resistance of the adhesive makes the coupling not easily fail under long-term alternating loads. In the case of frequent start-stop or large dynamic load changes of the equipment, it can maintain stable performance.

[0013] While ensuring the above technical requirements, the present utility model requires relatively low concentricity for the installation of the shaft because the connection state can be adaptively adjusted during the curing process of the adhesive, and it can compensate for small offsets of the shaft to a certain extent. At the same time, there is no problem of wear of elastic elements, and its response speed is faster, making it more advantageous in application scenarios that require rapid torque transmission and high-frequency response. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0015] Figure 1 The drawings are schematic diagrams of the main structure of the present utility model.

[0016] Figure 2 The drawings are the left views of the present utility model.

[0017] Figure 3 The drawings are the front views of the present utility model.

[0018] Figure 4 The drawings are schematic diagrams of the main structure of the driving shaft half-coupling of the present utility model.

[0019] Figure 5 The drawings are the left views of the driving shaft half-coupling of the present utility model.

[0020] Figure 6 The attached drawing is the front view of the driving shaft half coupling of the present utility model.

[0021] Figure 7 The attached drawing is the schematic structural view of the driven shaft half coupling body of the present utility model.

[0022] Figure 8 The attached drawing is the right view of the driven shaft half coupling of the present utility model.

[0023] Figure 9 The attached drawing is the front view of the driven shaft half coupling of the present utility model.

[0024] Figure 10 The attached drawing is the schematic view of the product after injecting glue of the present utility model. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to the attached Figures 1 - 10The present utility model discloses a high-response glue-injected coupling, which includes two half couplings. The driving shaft coupling 1 is connected to the driving shaft, and the driven shaft coupling 2 is connected to the driven shaft, so that the driving shaft drives the driven shaft to rotate. The two half couplings are arranged opposite to each other and are both provided with assembly holes 3 that cooperate with the driving shaft and the driven shaft. A number of protrusions 4 are provided on the opposite sides of the two half couplings. Grooves 5 are formed between the protrusions 4. The protrusions 4 and the grooves 5 cooperate with each other. The length of the groove 5 is greater than the length of the protrusion 4 to ensure that the protrusion 4 can be inserted into the groove 5. When the two half couplings cooperate with each other, they are bonded together by an adhesive. The adhesive is selected as a polyurethane adhesive. After the polyurethane adhesive cures, it has a certain elasticity and toughness, and can absorb a certain amount of vibration and impact. Polyurethane has good wear resistance and anti-aging properties and can maintain stable performance during long-term use. It has good adaptability to changes in humidity and temperature and is suitable for mechanical transmission systems under various working conditions. A chamfer 41 is provided at the top of the protrusion 4 to reduce stress concentration and facilitate the flow of the adhesive during the assembly process. Fine diversion grooves 51 are provided at the bottom of the groove 5 and the side wall of the protrusion 4 to guide the adhesive to be evenly distributed and enhance the bonding effect. The main bodies of the driving shaft half coupling 1 and the driven shaft half coupling 2 are both provided with positioning pin holes 31 into which positioning pins can be inserted to assist in the precise alignment and fixation of the driving shaft and the driven shaft. The positioning pins are all made of aluminum alloy. During use, the driving shaft and the driven shaft are inserted into the assembly hole 3, and the positioning pins can well solve the problem of inaccurate positioning. The contact surfaces of the driving shaft half coupling 1 and the driven shaft half coupling 2 are provided with fine grid textures 6, which can increase the contact area between the protrusions 4 and the grooves 5 and enhance the bonding effect of the adhesive.

[0027] The materials of the two half couplings are both aluminum alloy, making the overall coupling have the advantages of light weight and high strength, and can meet the requirements for working in harsh environments.

[0028] In order to ensure the improvement of torque transmission, rotational accuracy and shaft offset compensation ability, it is necessary to ensure that the adhesive has high bonding strength, rapid curing and long-term stability. When injecting glue, the thickness of the glue injection layer should be between 0.1 mm and 1 mm, and the specific value is determined according to the specific coupling size and design requirements. The shape of the glue injection space is usually an annular gap to ensure that the adhesive can evenly surround the connecting components. The inner diameter and outer diameter of the annular gap should be determined according to the outer diameter of the connecting components and the design of the coupling.

[0029] The diameter range of the glue injection needle is 0.5 mm - 1.5 mm, and the specific value is determined according to the specific coupling size and design requirements. The length of the glue injection needle is determined according to the length of the coupling, not less than 1 / 2 of the length of half of the coupling, and at the same time longer than the length of half of the coupling, which not only ensures that it can penetrate into the glue injection space but also avoids affecting the operation convenience due to being too long. The material of the glue injection needle is stainless steel, which has good corrosion resistance and mechanical strength.

[0030] The injection pressure is controlled between 0.5 Mpa and 2.0 Mpa, and the specific pressure value needs to be adjusted according to the viscosity of the adhesive, the size and shape of the injection space.

[0031] Specific operation steps: Clean the injection space and connecting parts to ensure there are no impurities such as grease and dust. Perform surface treatment on the injection space, such as sandblasting, grinding, and applying primer, to improve the adhesion of the adhesive. Select a suitable injection needle and pressure, and gradually inject the adhesive to ensure uniform distribution and complete filling. According to the characteristics of the adhesive, perform room temperature curing or heat curing to ensure that the adhesive is completely cured and reaches the best performance.

[0032] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and reference can be made to the description in the method part for related parts.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-response glue injection coupling, characterized in that: include: A driving shaft half coupling (1) and a driven shaft half coupling (2) matched with the driving shaft half coupling (1), the two half couplings are arranged opposite to each other, both are provided with assembly holes (3) matched with the driving shaft and the driven shaft, and play the role of the driving shaft driving the driven shaft, the two half couplings are provided with a plurality of protrusions (4) on the opposite sides, and grooves (5) are formed between the protrusions (4), the length of the grooves (5) is greater than the length of the protrusions (4), so as to ensure that the protrusions (4) can be inserted into the grooves (5), and the protrusions (4) and the grooves (5) are bonded by an adhesive.

2. The high-response glue injection coupling according to claim 1 is characterized in that: The top of the protrusion (4) is provided with a chamfer (41).

3. The high-response glue injection coupling according to claim 1 is characterized in that: The bottom of the groove (5) and the side wall of the protrusion (4) are provided with guide grooves (51) to guide the adhesive to flow.

4. The high-response glue injection coupling according to claim 1, characterized in that: The top of the protrusion (4) and the bottom of the groove (5) are provided with a grid texture (6) for increasing the contact area.

5. The high-response glue injection coupling according to any one of claims 1 to 4, characterized in that: The adhesive is a polyurethane adhesive.

6. The high-response glue injection coupling according to any one of claims 1 to 4, characterized in that: The driving shaft half coupling (1) and the driven shaft half coupling (2) are both made of aluminum alloy or titanium alloy.

7. The high-response glue injection coupling according to claim 1, characterized in that: The main bodies of the driving shaft half coupling (1) and the driven shaft half coupling (2) are both provided with positioning pin holes (31) into which positioning pins can be inserted to assist in aligning and fixing the driving shaft and the driven shaft.

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